99 citations · 154 across the 23 of their papers we have counts for
14 papers · 1 filter
Topological control of third-harmonic generation in a mesoscopic quantum ring with spiral dislocation
Carlos Magno O. Pereira, Denise Assafrão, Edilberto O. Silva
We investigate the nonlinear optical response of a two-dimensional mesoscopic quantum ring subjected to a spiral dislocation, with emphasis on third-harmonic generation (THG). The…
Torsion-controlled spin transport and tunable intersubband absorption in a screw-dislocated semiconductor nanowire
Carlos Magno O. Pereira, Edilberto O. Silva
We develop an effective-mass theory for spin-resolved transport and intersubband optical absorption in a finite semiconductor nanowire containing a uniform screw-dislocation-induce…
Bounds on Lorentz-violating parameters in magnetically confined 2D systems: A phenomenological approach
Edilberto O. Silva
We present a unified, SI-consistent framework to constrain minimal SME coefficients and using magnetically confined two-dimensional electron systems under a uniform mag…
Quantum Hall-like effect for neutral particles with magnetic dipole moments in a quantum dot
Carlos Magno O. Pereira, Edilberto O. Silva
We predict a new class of quantum Hall phenomena in completely neutral systems, demonstrating that the interplay between radial electric fields and dipole moments induces exact $e^…
Geometry-Induced Chiral Currents in a Mesoscopic Helicoidal Quantum Well
Edilberto O. Silva
We introduce a mesoscopic quantum well whose confinement and chirality emerge solely from the intrinsic torsion of a finite helicoidal metric. This purely geometric construction re…
Spiral dislocation as a tunable geometric parameter for optical responses in quantum rings
Hassan Hassanabadi, Kangxian Guo, Liangliang Lu +1
We investigate the optical and quantum mechanical properties of a charged spinless particle confined in a two-dimensional quantum ring under the simultaneous influence of a spiral…
Exact treatment of rotation-induced modifications in two-dimensional quantum rings
Carlos Magno O. Pereira, Frankbelson dos S. Azevedo, Edilberto O. Silva
We investigate the influence of rotation on the Fermi energy, magnetization, and persistent current in two-dimensional quantum rings. Using the Tan-Inkson confinement potential and…
Rotating effects on the Hall conductivity in a quantum dot
Carlos Magno O. Pereira, Luís Fernando C. Pereira, Denise Assafrão +1
We investigate the behavior of the quantized Hall conductivity in a two-dimensional quantum system under rotating effects, a uniform magnetic field, and an Aharonov-Bohm (AB) flux…
Modifications in the photoionization cross-section of a quantum dot with position-dependent effective mass
Carlos Magno O. Pereira, Denise Assafrão, Frankbelson dos S. Azevedo +3
In this work, we investigate the photoionization cross-section of an electron confined in a quantum dot, considering the position-dependent variation of the effective mass through…
Effects of rotation on the thermodynamic properties of a quantum dot
Luís Fernando C. Pereira, Edilberto O. Silva
In this work, we investigate the effects of rotation on the physical properties of a quantum dot described by a radial potential and subjected to a rotating reference frame. The in…
Remarks on the Study of Electronic Properties and Photoionization Process in Rotating 2D Quantum Rings
Carlos Magno O. Pereira, Frankbelson dos S. Azevedo, Edilberto O. Silva
Electronic and optical properties of a mesoscopic heterostructure of a two-dimensional quantum ring composed of Gallium Arsenide (GaAs) semiconductors are investigated. Using the c…
Magnetoresistance and electric current oscillations induced by geometry in a two-dimensional quantum ring
Francisco A. G. de Lira, Edilberto O. Silva, Christian D. Santangelo
In this work, we investigate the effects of a controlled conical geometry on the electric charge transport through a two-dimensional quantum ring weakly coupled to both the emitter…
Thermodynamic properties of an electron gas in a two-dimensional quantum dot: an approach using density of states
Luís Fernando C. Pereira, Edilberto O. Silva
Potential applications of quantum dots in the nanotechnology industry make these systems an important field of study in various areas of physics. In particular, thermodynamics has…
Rotating effects on the photoionization cross-section of a 2D quantum ring
Carlos Magno O. Pereira, Frankbelson dos S. Azevedo, Luís Fernando C. Pereira +1
In this letter, we investigate the nonrelativistic quantum motion of a charged particle within a rotating frame, taking into account the Aharonov-Bohm (AB) effect and a uniform mag…